supply of power bank of capacity-30000 mahpower bank of capacity-30000 mah,20 nos of power bank of capacity-30000 mah, power delivery-65 w type c, charging ports- two usb quick charge ports, warranty-01 year, rechargeable battery type- li-ion, shell material- abs plasti c, efficiency of power bank(%)->/= 75%, number of charging cycles (no?s)- >/= 500, input ac power suppl y- ac adapter (ac 100-240 v, 50-60 hz), protection against over temperature-yes, protection against over c harging -yes, protection against short circuit-yes, standard charger & power cable-yes, operating chargin g temperature range-0 deg. to 50 deg c, reset protection-yes, output over voltage protection-yes, input reverse direction protection-yes, cell ptc protection-yes, protective circuitry-yes. [ warranty period: 30 months after the date of delivery ] ]